scrollmove the page shift+scrollmove sideways ctrl+scrollzoom at cursor ctrl+= / ctrl+-zoom in and out dragfree pan in any direction dblclickfit view up / downprevious or next node at the same depth, opening folded branches leftgo to the parent rightgo to the first child, showing it if folded ctrl+jfold or unfold the selected node entergo into the node's links, up and down pick one enter on a linkfollow it, enter again follows it back escleave the links on the end you are at, close popovers backspace, alt+leftback to the previous node you visited alt+rightforward again ctrl+1..9show that many layers ctrl+0unfold everything ctrl+alt+1..9focus the selected branch sidebarthe top right button opens and closes it sourcesidebar toggle between excerpts and the full source edgeclick an edge, then follow it to the other end cursor pilldrag the divider to resize the sidebar clickselect a node, it does not open the sidebar